Multitec® 540

Portable biogas measuring device

Measures methane and carbon dioxide without interference from other gases
Optional measurement of oxygen, carbon monoxide, hydrogen and hydrogen sulphide
Explosion-proof device for safe operation
Simple adjustment using test gas
Large display shows all values simultaneously
Measure up to six gases at once
Data logging with USB transfer to PC

With the Multitec® 540 you can measure and analyse the gas mixtures produced during biological processes. Integrated infrared sensors and optional electrochemical sensors enable simultaneous measurement of up to six gases, with all concentrations shown together on a large display. Explosion-proof and simple to adjust with test gas, it is the mobile solution for operators of biogas plants, sewage treatment plants and landfills that need accurate gas-composition recording and documentation.

Key Features

Integrated infrared sensors Measure methane and carbon dioxide by default.

Optional electrochemical sensors Add oxygen, CO, H2 and H2S measurement.

Explosion protection TUV ATEX certified for hazardous environments.

Data documentation Measurement values logged and transferable via USB.

H2S capability Electrochemical cell covers a 0 - 2,000 ppm range.

Specifications

Series & certificate

Type/model	066 12
Certificate	TUV 07 ATEX 553353 X; II 2G Ex db eb ib IIB/IIC T4 Gb

Device

Dimensions (W x D x H)	approx. 148 x 57 x 205 mm (253 mm with supporting bracket)
Weight	approx. 1000 g (35 oz), depending on equipment
Display	Monochrome, 320 x 240 pixel
Pump	Diaphragm, > 250 mbar, typically 50 l/h, F100 monitoring
Interface	USB 2.0
Memory	8 MB
Controls	ON/OFF key, 3 function keys, jog dial

Sensors

Standard	IR for CH4, IR for CO2
Optional	EC for CO, H2, H2S, O2
H2S measuring range	0 - 2,000 ppm

Operating conditions

Operating temperature	-20 - 40 C (-4 - 104 F)
Humidity	5 - 90 % r.h., non-condensing
Atmospheric pressure	800 - 1100 hPa
Protection rating	IP54

Power supply

Power supply	4 cells, type Mignon AA (NiMH or alkaline)
Battery capacity	2000 mAh
Operating time, typical	at least 6 h
Charging time	approx. 3 h

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